Hi.Yes, that's the problem alright. you said it in the first sentence. It hasn't been used for a while. Therefore, no one would have replaced the batteries as they weakend from sitting, so now you have memory corruption which means you have lost everything from the machine. It must be fully RAM cleared and re-programmed. I hope you have a backup, or there may be a lot of work ahead. If your dealer programmed it originally, they will probably have a backup of your prog to dump into it.

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